Holes in brush backs by pressure



4 Sheets-Sheet '1.

(No Model.) 0. E. FLEMMING. I I

APPARATUS FOR FORMING HOLES I-N BRUSH BAGKS BY PRESSURE.

Patented Mar. 15,1898.-

WITNESSES:

(No Model.)

2 M. e h S F MW e h S 4 G N I M M E L fi H 0 APPARATUS FOR FORMING HOLESIN BRUSH BACKS BY PRESSURE Patented Mar. 15, 1898.

(No Model.) 4 Sheets-Sheet 4.

v C. E. PLEMMING. APPARATUS FOR FORMING HOLES IN BRUSH BACKS BYPRESSURE. No. 600,687.

Patented Mar. 15,1898.

) lwmdmxm, QMEQ A SQMSS Wmmssas //MZM:

FFICEQ CARL EDUARD FLEMMING, OF SCHOENHEIDE, GERMANY.

APPARATUS FOR FORMING HOLES IN BRUSH-BACKS BY PRESSURE.

SPECIFICATION forming part of Letters Patent No. 600,687, dated March15, 1898.

Application filed $eptem'ber 28,1896- Serial No. 607,199. (No model.)Patented in Germany April 5, 1895, No. 86,690; in England April 24,1896,N0. 8,689,- in Belgium June 1,1896, N0.121,739, in Italy June 80,1896, LXXXII, 12, and in Austria July 12, 1896,1T0. LB/2,786.

To aZZ whom it may concern.

Be it known that I, CARL EDUARD FLEM- MING, a subject of the King ofSaxony, residing at Schoenheide, Saxony, Germany, have invented acertain new and useful Improvement Relating to Apparatus for FormingHoles in Brush-Backs by Pressure, (for which patents have been procuredin the following countries: Germany, dated April 5, 1895, No. 86,690;Italy, dated June 30, 1896, Vol. 82, No. 12; England, dated April 24,1896, No. 8,689; Austria, dated July 12, 1896, Tom. 46, Vol. 2,786, andBelgium, dated June 4, 1896, No. 121,739,) of which the following is aspecification.

The invention relates to an apparatus for pressing the holes forbristles in brushes in rows or in groups several'at a time. If in abrush-body all the bristle-holes are to be parallel, by means of thisapparatus all the holes can be formed by one single pressing operation.It is of course to be understood that the material selected for thebrush-bodies is capable of undergoing such punching of the holes withouttearing or breaking. Wood, celluloid, papier-mach, and the likesubstances are suitable for this purpose.

The accompanying drawings form a part of this specification andrepresent constructions embodying my invention.

Figure 1 is a front elevation of my improved brush-back boring machine.Figs. 2 to 5 show parts on a larger scale. Fig. 2 is a vertical section,partly in elevation, at right angles to the plane of Fig. 1, the viewillustrating more particularly the back-clamp, the punches, and platedirectly carrying the same. Fig. 3 is a plan view, partly broken away,of the back-clamping provision. Fig. 4: is a plan view of thepunch-carrying plate. Fig. 5 is a vertical section, partly in elevation,corresponding to Fig. 2, but at right angles thereto, the portion fbeing slightly modified,as will be fully explained below. Similarletters of reference indicate like parts in all these figures. Figs. 6and '7 show a modification. Fig. 6 is an elevation partly in verticalsection, and Fig. 7 is an elevation, partly in section, on a plane atright angles to the view in Fig. 6. The letters of reference correspondin these two figures. Fig. 8 is a view illustrating an arrangement forpunching oblique holes in a brush-back having a fiat upper surface.

Figures 1 to 5 illustrate a simple form of apparatus of this kind. Itconsists of two main parts, one of which serves for holding the brushesand the other part for pressing in or punching the holes. Thebrush-holder may be constructed of various forms, so long as thatportion of the brush-body in which the holes are to be pressed is heldin such a manner as not to split when the punches or pressing-tools areforced into it. In the arrangement shown in these figures the plate asupports two strips d, between which that part of the brush which is tobe punched is inserted. The space between the strips 01 d and the platea, provided for the reception of the brush-body, is further limitedtoward the top by a plate 6; but this plate may be dispensed with, ashereinafter stated. In this plate there are holese, through which thepunches project. The brush, which may be, for example, a tooth-brush A,as shown in Figs. 1 to 5, is inserted into the holder from the side. Inorder that the holes shall always be accurately pressed at the samespot, there is provided on the brush-holder a stop 9, which serves tolimit the advance of the brush-body. The stop 9 is adjustable by meansof a slot and set-screw g. The strips d are capable of being adjustedlaterally by being formed with slots at, guided along the screws (1which connect the parts a at d e of the holder. By this means the stripscl can be adjusted, as regards their distance apart, to suit brushes ofdifferent widths, and also to the extent of a small angle relatively toeach other for the purpose of enabling brushes to be pierced whose widthtapers or. varies. For brushes with backs of diiferent heights thestrips cl must be replaced by higher strips. The holder is also madevertically adjustable for the last-mentioned purpose by the aid ofscrews 0, which support the holder, the lower ends of the bolts screwinginto the supporting-bed, while the upper ends have suitable heads forthe application of an operatingwrench. J am-nuts 0' above the holderserve, in connection with collars c, to rigidly clamp the holder aftereach adjustment.

The punching device consists of a plate f,

which is provided with the requisite number of punches orsmallpressingtoolsf, arranged in series. The punches f fit accurately inthe same number of holes e of the plate 6. As the plate f is moved upand down the bristle-holes are formed in the brush-bodies A as they aresuccessively inserted in the holder.

The plate (2, with the holes e, is designed to serve several purposes.First, these holes constitute guides for the punches f, so as to preventthe latter from being bent or from assuming inclined positions duringthe punching operation. Preferably the pressing-plate f has a strokesmall enough to insure that the punches do not lose their guidance inthe holes 6. The plate 6 also serves to keep back the brush-bodies afterthe holes have been punched, so that the punches do not carry thebrush-bodies up with them. Finally the plate 6 is requisite in orderthat the punched holes shall have sharp clear-cut mouths and that theupper surface of the brushbody shall remain smooth.

The plate f, with its punches f, must be pressed downward to a greateror less extent, according as it is desired that the bristle-holes shallhave more or less depth. The depth of the punching of the holes may beregulated in various waysnamely, either the length of the punches f orthe stroke or the height of the plate a can be Varied.

In Fig. 1 the plate f is shown as being attached to and capable ofrising with the plunger t.

Fig. 5 shows an arrangement in which the plunger 1 is not fixed to thepressing-plate f. The latter is in this case elevated by means ofsprings Z and is restrained by stops K in the highest position in whichthe punches are still guided in the holes e. According as the table I)is situated at a greater or less height the plunger 1; will meet thepressing-plate f sooner or later, so that holes can be punched ofcorresponding depth.

A preferable form of the entire machine is shown in Figs. 6 and 7. Thebrush-holder is made adjustable in this case in such a manner as toenable oblique holes to be punched in the brush-body,it being immaterialwhether the brush-body has a flat or a convex upper surface. Abrush-holder of this kind is required particularly when the bundles ofbristles or rows of tufts are not parallel side by side, but arearranged relatively to one another somewhat like the radii of acylinder. In this case the brush is held between checks or jaws n, Fig.6, which can be moved relatively to each other by means of the screws 0or any other suitable means. These jaws 7t are arranged in a frame m,which is immovably fixed to a part 1). The latter is pivoted on the pin(1 on the sliding carriage r and forms a rigid whole with the toothedwheels, in which the worm-Wheel t engages. On turning the latter bymeans of the hand-wheel u the part 19 also turns with the brush-holder mabout the pin q, so that the brush-body is brought into another positionunder the punching device. In this case it has been assumed that thesurface of the brush to be punched is formed convex like the surface ofa cylinder and that all the bundles or rows of bristles are arrangedradially. The sliding carriage r is adjusted by means of the spindle win such a manner that the axes of the pin (1 and of the pressing-spindleJ are at right angles to each other and in one plane. The punchingdevice employed has only one row of punches.

the brush-body, then the brush-holder is rotated by means of thehand-wheel u to such an extent as to enable the next row of holes to bepunched, and so on. The holes for the tufts of bristles all have oneradial position, their axes converging toward the axis of the pin g. Ifit is desired to arrange the tufts in an arc of more or less curvature,it is necessary to clamp the brushes at a greater or less heightthat isto say, nearer to or farther away from the axis q.

The shifting of the punching device may be effected by means of thehand-wheel K, whereby the spindle J can be set to a greater or lessheight in the sliding carriage L.

In the case last described the plate 6, with the guide-holes e for thepunches, is not fixed On its downward stroke onlyg one longitudinal rowof holes are punched in on the brush-holder, but is carried loosely bythe pressing-plate f. The brush is then held at its sides and has itsupper surface free. The set-screw G insures the proper endwise positionof the brush when inserted. The plate e is made adjustable to a certainextent on the cross-pieces 8 above the pressing-plate f by means of theguide-slots e and screws 6 and is held underneath by the springs Z. Onthe downstroke of the pressing-punch the plate e therefore bears firstagainst the brushbody, and in consequence of the compression of thesprings Z it is held with increasing pressure against the brush-body, sothat uniformly-punched holes are produced. When it is desired to punchholes of any desired obliquity, the sliding carriage 1" must also beshifted in addition to the adjustment by means of the hand-wheel a.

When a brush-body having a flat upper surface is to be provided withobliquely-set holes for the bristle-tufts, the guide-holes e for thepunches f in the plate 6 must all, or in part, lie obliquely tocorrespond in the manner shown in Fig. 8 in order to enable the punchesto work, also when the plate 6 is placed obliquely. In this case theplate 6 is preferably fixed to the holder, which, as in the previouscase, may be pivoted on an axis lying at right angles to the dash-dottedmiddle line of Fig. 8.

Further modifications may be made without departing from the principleor sacrificing the advantages of theinvention. I can increase themovement of the plate f; but if the punches should move quite out of theholes it might possibly occur that in the next down stroke they Wouldnot enter accurately into their holes again. This lastmentioned dangermay be lessened by making the guidingholes 6 with rounded or flaringupper edges or by tapering or beveling the punches at their ends inorder that the punches shall enter properly into their guide-holes.

I claim as my invention- 1. In a machine for producing holes inbrush-backs, the combination With a plate a carried byahorizontally-adjustable support pivotally sustained to tilt in eitherdirection, suitable gaging means on the plate for controlling theposition of the brush-back, a perforated plate 6 and a punch-carryingplate operable above the same, substantially as set forth.

2. In a machine for producing holes in brush-backs, the combination witha plate a carried by a horizontally-adjustable support pivotallysustained to tilt in either direction, suitable gaging means on theplate for controlling the position of the brush-back, de-

vices for vertically adjusting the plate a, a perforated plate e, and apunch carrying plate operable above the same, substantially as hereinspecified.

3. In a machine for producing holes in brush-backs, the combination witha plate a, carried by a horizontally-adjustable support pivotallysustained to tilt in either direction, of laterally-adjustable plates 61cl, and longitudinally-adj ustable stop g for gaging the position of theback on the plate, and a perforated plate e and punches, substantiallyas herein specified.

4:. In a machine for producing holes in brush-backs, the combinationwith a plate a, carried by a horizontally-adj ustable support, pivotallysustained to tilt in either direction of laterally-adjustable plates 01d, and longitudinally-adj ustable stop g for gaging the position of theback on the plate, a perforated plate e, and a normally spring-elevatedplate f carrying punches, substantially as specified.

5. In a machine for producing holes in brush-backs, a shaft turning inbearings, a part 19, rigidly mounted thereon and sustaining aplate at,having suitable means for supporting a brush-back, a gear-segmentrigidly secured to the shaft and part 19 for varying the inclination ofthe plate a, in combination with a perforated plate e supported injuxtaposition to the plate a, punch-carrying plate f above thesame,interposed expandingsprings and a pressing-spindle J ,substantiallyas herein specified.

6. In a machine for producing holes in brush-backs, the combination witha plate a, carriedby a horizontally-adjustable support pivotallysustained to tilt in either direction, suitable gaging means on theplate, a perforated plate e, punch-carrying plate above the same and apressing-spindle J Vertically adjustable in the actuating part,substantially as herein specified.

7. In a machine for producing holes in brush-backs, the combination witha plate a carried by a horizontally-adjustable support pivotallysustained to tilt in either direction and having suitable means forsupporting a brush-back, of a perforated plate 6, in juxtaposition tothe plate a, punch-carrying plate f, lifting-springs and a limiting-stopfor the latter, and punch-actuating means, substantially as hereinspecified.

In testimony whereof I have hereunto set my hand, at Schoenheide, this25th, day of August, 1896, in the presence of two subscribing Witnesses.

CARL EDUARD FLEMMING.

Witnesses:

THEODORE M. STEPHAN, EUGEN KLEMEN-Z.

